Abstract: Based on the accomplished theory, modern philosophy took the ultimate substance as the object of study, and established an all-inclusive metaphysical system by abstract thinking. However, based on the generative theory, Marx took generative substance as the object, and established the status of the ontology of generative practice, which brought philosophy back to the world of real life. It is by the form of thought based on generative theory that the readers can grasp the great significance of ontology revolution of Marxist philosophy more easily, resulting in avoiding any retreat of theory.